I did not buy somebody's private keys. The seller transferreed their account to my public key by updating the "owner" and "active" permission for the account. The whole transaction was done through cleos (command line eos) and is completely trustless.

You can see it here on the EOS blockchain: https://explorer.eoseco.com/transactions/04f63754b34f29a4f4b71f378fc648bede0b960b06c80e271ae63d76fa65878a

I have been in the crypto space long enough in order to understand public-private key cryptography and how to verify a transaction that was published on a blockchain. On every other blockchain I know, if a transaction is mined it is valid.

As I said, I made the transaction in good faith. I validated everything I could validate. I did not expose my private keys to any rouge software or compromised website. I did my due diligence.

How should I possibly know that the account was from a phishing scam?